← Back to Patent Explorer
US4388842A Expired / Lapsed US ⏱️ 0.0 years remaining

Locking device for a differential mechanism

Assignee: Kawasaki Motors Corp
•
Filing: 1980-07-01
•
Granted: 1983-06-21
•
Expires: 2000-07-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A locking device for a differential mechanism wherein the locking device comprises a locking gear movable along an axis normal to the axes of rotation of a pair of side planetary gears and a pair of pinion sun gears, the locking gear being engageable with both pairs of planetary and sun gears to minimize and reduce radial stressing of said pairs of gears in locked condition, the locking device being readily manually actuated and retained in locked or unlocked condition.

Inventors

  • 👤 Gerald V. Marcell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 06:37
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/30; F16H48/06; F16H48/08; F16H48/24; F16H2048/085; F16H2048/087; F16H2048/201; F16H2048/305; F16H48/38; F16H48/40

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 109 words
A locking device for a differential mechanism including a pair of sun gears on a first axis and a pair of planetary gears on a second axis normal to the first axis for meshed interengagement comprising in combination: a bevel locking gear on a shaft supported independently of said pairs of sun and planetary gears and about a third axis perpendicular to the first and second axes; said shaft and bevel locking gear being reciprocally movable along said third axis from a first position of simultaneous engagement with said pairs of sun and planetary gears to a second position of disengagement from said pairs of sun and planetary gears.
Claim 2
Dependent Claim 109 words
A locking device for a differential mechanism including a pair of sun gears on a first axis and a pair of planetary gears on a second axis normal to the first axis for meshed interengagement comprising in combination: a bevel locking gear on a shaft supported independently of said pairs of sun and planetary gears and about a third axis perpendicular to the first and second axes; said shaft and bevel locking gear being reciprocally movable along said third axis from a first position of simultaneous engagement with said pairs of sun and planetary gears to a second position of disengagement from said pairs of sun and planetary gears.
Claim 3
Dependent Claim 151 words
Locking device for a differential mechanism having a coaxial pair of sun pinion gears on a first axis meshed with a pair of side planetary gears on a second axis normal to the first axis and a driving means including a revolving gear housing enclosing said pairs of sun pinion and planetary gears, comprising, in combination therewith: a locking gear mounted on said housing for reciprocal movement along a third axis perpendicular to the axes of said side and sun pinion gears; said locking gear lockingly engaging said pairs of side planetary and sun pinion gears in one position to prevent differential operation thereof; means for mounting said locking gear comprising a threaded fitting on said housing, a threaded shaft carrying said locking gear and engaged with said threaded fitting, and means for turning said shaft to engage and disengage the locking gear with said side planetary and sun pinion gears.
Claim 4
Dependent Claim 151 words
Locking device for a differential mechanism having a coaxial pair of sun pinion gears on a first axis meshed with a pair of side planetary gears on a second axis normal to the first axis and a driving means including a revolving gear housing enclosing said pairs of sun pinion and planetary gears, comprising, in combination therewith: a locking gear mounted on said housing for reciprocal movement along a third axis perpendicular to the axes of said side and sun pinion gears; said locking gear lockingly engaging said pairs of side planetary and sun pinion gears in one position to prevent differential operation thereof; means for mounting said locking gear comprising a threaded fitting on said housing, a threaded shaft carrying said locking gear and engaged with said threaded fitting, and means for turning said shaft to engage and disengage the locking gear with said side planetary and sun pinion gears.
Claim 5
Dependent Claim 31 words
In a device as stated in claim 2 including lock means to selectively retain said locking gear in an engaged or disengaged position with said side planetary and sun pinion gears.
Claim 6
Dependent Claim 118 words
In a differential mechanism, the combination of: two side gears arranged on a first axis in spaced relation and connected to respective coaxial output shafts; two planetary gears arranged on a second axis perpendicular to the first axis and engaged with said side gears; a housing for said side and planetary gears and including a drive gear for rotating said housing; and a fifth gear comprising a bevel locking gear supported from said housing along a third axis perpendicular to said first and second axes and being selectively moveable along said third axis from a first position of simultaneous engagement with said side and planetary gears to a second position of disengagement from said side and planetary gears.
Claim 7
Dependent Claim 118 words
In a differential mechanism, the combination of: two side gears arranged on a first axis in spaced relation and connected to respective coaxial output shafts; two planetary gears arranged on a second axis perpendicular to the first axis and engaged with said side gears; a housing for said side and planetary gears and including a drive gear for rotating said housing; and a fifth gear comprising a bevel locking gear supported from said housing along a third axis perpendicular to said first and second axes and being selectively moveable along said third axis from a first position of simultaneous engagement with said side and planetary gears to a second position of disengagement from said side and planetary gears.
Claim 8
Dependent Claim 166 words
A locking device for a differential mechanism having a pair of sun gears on a first axis meshed with a pair of planetary gears on a second axis normal to the first axis and a driving means including a revolving gear housing enclosing said pairs of sun and planetary gears comprising in combination therewith: a bevel locking gear mounted on said housing for reciprocal movement along a third axis perpendicular to the first and second axes; said bevel locking gear lockingly engaging said pairs of planetary gears and sun gears in one position to prevent differential operation thereof; and means for mounting said bevel locking gear including a shaft carried by said housing along the axis of said bevel locking gear and supporting said bevel locking gear, said shaft being axially movable along said third perpendicular axis from a first position of simultaneous engagement with said pairs of sun and planetary gears to a second position of disengagement from said pairs of sun and planetary gears.
Claim 9
Dependent Claim 166 words
A locking device for a differential mechanism having a pair of sun gears on a first axis meshed with a pair of planetary gears on a second axis normal to the first axis and a driving means including a revolving gear housing enclosing said pairs of sun and planetary gears comprising in combination therewith: a bevel locking gear mounted on said housing for reciprocal movement along a third axis perpendicular to the first and second axes; said bevel locking gear lockingly engaging said pairs of planetary gears and sun gears in one position to prevent differential operation thereof; and means for mounting said bevel locking gear including a shaft carried by said housing along the axis of said bevel locking gear and supporting said bevel locking gear, said shaft being axially movable along said third perpendicular axis from a first position of simultaneous engagement with said pairs of sun and planetary gears to a second position of disengagement from said pairs of sun and planetary gears.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-06-20 1986-12-20 1987-06-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-06-20 1990-12-20 1991-06-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-06-20 1994-12-20 1995-06-21 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag